High definition video-rate laser-addressed liquid-crystal light- valve projection display

摘要

A high definition, video-rate laser-addressed liquid-crystal light- valve projection display provides for real-time applications to large- area projection displays. A laser raster scanner uses acousto- optic components to modulate and deflect the laser beam. An acoustic optical, acoustic traveling wave lens is included to increase the optical resolution of the scanner system. A liquid-crystal light-valve spatially is modulated by a high resolution coherent beam to responsibly modulate a high intensity light coming from an arc lamp source. The modulated high intensity light is reflected from the liquid-crystal light-valve and is projected onto a large screen. The use of acousto-optic Bragg cells to modulate, horizontally track, horizontally chirp and vertically impart a beam of coherent light allows a projection of a 1075-line RS-343A high definition or resolution TV standard image on the screen.